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2009 , Vol. 24 >Issue 3: 525 - 530

DOI: https://doi.org/10.3724/sp.j.1077.2009.00525

研究论文

纳米TiO2/Sb2O5涂层的光生阴极保护研究

  • 周民杰 ,
  • 曾振欧 ,
  • 钟 理 ,
  • 赵国鹏
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  • 1. 华南理工大学 化学与化工学院， 广州 510640; 2. 广州二轻工业科学技术研究所， 广州 510170

收稿日期: 2008-09-22

  修回日期: 2008-11-10

  网络出版日期: 2009-05-20

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Photogenerated Cathodic Protection Properties of Nanosized TiO2/ Sb2O5 Coating

  • ZHOU Min-Jie ,
  • ZENG Zhen-Ou ,
  • ZHONG Li ,
  • ZHAO Guo-Peng
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  • 1. School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510641, China; 2. Guangzhou Etsing Plating Research Institute, Guangzhou 510170, China

Received date: 2008-09-22

  Revised date: 2008-11-10

  Online published: 2009-05-20

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摘要

采用溶胶凝胶法在304不锈钢表面制备了纳米TiO2/Sb2O5叠层涂层. 用扫描电子显微镜（SEM）、X射线衍射（XRD）、X射线光电子能谱(XPS)对涂层表面形貌、晶体结构以及组成进行表征. 采用电化学方法研究涂层的光电化学性能与光生阴极保护特性. 结果表明，所制备的纳米TiO2/Sb2O5叠层涂层表面连续、均匀、致密；XRD分析表明纳米TiO2为锐钛矿型；XPS分析表明纳米涂层表面与内层均由Ti、Sb、O、C四种元素组成；稳定电位与极化曲线测试表明，在3%NaCl溶液中，纳米TiO2/Sb2O5叠层涂层的光电化学性能低于纯纳米TiO2涂层，但纳米TiO2/Sb2O5涂层经紫外光照1h，停止紫外光照后的延时阴极保护作用可达4h. 通过研究分析，提出了一种新的纳米叠层涂层光生阴极保护作用机理.

关键词： 纳米TiO2; 纳米Sb2O5; 叠层涂层; 光电化学; 光生阴极保护; 腐蚀防护

本文引用格式

周民杰 , 曾振欧 , 钟 理 , 赵国鹏 . 纳米TiO2/Sb2O5涂层的光生阴极保护研究[J]. 无机材料学报, 2009 , 24(3) : 525 -530 . DOI: 10.3724/sp.j.1077.2009.00525

Abstract

Nano-sized TiO2/Sb2O5 bilayer coatings were prepared on type 304 stainless steel substrate by solgel method. Surface morphology, structure and composition of the asprepared TiO2/Sb2O5 coatings were characterized by scanning electron microscope (SEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscope (XPS). The performance of photoelectrochemical and photogenerated cathodic protection of the coatings was investigated using the electrochemical method. SEM results indicate that the coating surface is continuous, uniform and dense, XRD results show that the coating is of anatase TiO2, XPS results indicate the outer and inner coatings are mainly composed of Ti, Sb, C and O elements. Moreover, the test results of the steady potential and polarization curves demonstrate that the nanosized TiO2/Sb2O5 bilayer coating has worsen photoelectrochemical properties than the plain nanosized TiO2 coating in 3% NaCl solution. Type 304 stainless steel coated with the bilayer coating can maintain cathodic protection for 4h in the dark after irradiation by UV illumination for 1h. In addition, a novel mechanism of the photogenerated cathodic protection for the bilayer coating is put forward.

Key words： nano-sized TiO2; nano-sized Sb2O5; bilayer coating; photoelectrochemical; photocathodic protection; corrosion protection

参考文献

［1］Konishi T, Tsujikawa S. ZairyotoKankyo, 1997, 46(4): 709-716.
［2］Huang J, Shinohara T, Tsujikawa S. ZairyotoKankyo, 1999, 48(7):575-582.
［3］Ohko Y, Saitoh S, Tatsuma T, et al. Electrochem. Soc., 2001, 148(1): B24-28.
［4］Song Laizhou, Song Shizhe, Gao Zhiming. Journal of Materials Science and Technology, 2004, 20(5): 599-601.
［5］肖正伟，曾振欧，赵国鹏，等.电镀与涂饰, 2007，26(7):35-38.
［6］曾振欧，周民杰，肖正伟，等.华南理工大学学报，2008, 36(7):77-81.
［7］Shen G X，Chen Y C, Lin C J. Thin Solid Films, 2005, 489(5): 130-136.
［8］Shan C X, Hou XiangHui, Choy KwangLeong. Surface & Coatings Technology, 2008, 202(5): 2399-2402.
［9］Subasri R, Shinohara T.Electrochemistry Communications, 2003, 89(5): 897-902.
［10］Raghavan Subasri，Tadashi Shinohara，Kazuhiko Mori. Science and Technology of Advanced Materials, 2005, 145(6): 501-507.
［11］沈广霞，陈艺聪，李 静，等.中国腐蚀与防护学报，2006, 26(2): 109-114.
［12］Tatsuma T, Ohko Y, Saitoh S, et al.Chem. Mater., 2001, 13(7): 2838-2842.
［13］Ngaotrakanwiwat P, Tatsuma T, Saitoh S, et al.Phys. Chem. Chem. Phys., 2003, 276(5): 3234-3237.
［14］Ngaotrakanwiwat Pailin, Tatsuma Tetsu. Journal of Electroanalytical Chemistry, 2004, 573(1):263-269.
［15］Takahashi Yukina, Ngaotrakanwiwat Pailin, Tatsuma Tetsu. Electrochimica Acta, 2004, 49(2):2025-2029.
［16］沈广霞，陈艺聪，林昌健.物理化学学报，2005，21(5): 485-489.
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